Servo

Error

Amp

Ref

27k

Ω

8k

Ω

Current

Limit

Thermal

Protection

Bandgap

NR

OUT

R

1

R

2

EN

GND

IN

R

4MHz

Charge Pump

IN

N/C

N/C

EN

8

7

6

5

OUT

N/C

NR/FB

GND

1

2

3

4

DRBPACKAGE

3mmx3mmSON

(TOPVIEW)

TPS73619

www.ti.com

SBVS167

– JUNE 2011

FUNCTIONAL BLOCK DIAGRAM

Figure 2. Fixed Voltage Version

PIN CONFIGURATION

PIN DESCRIPTIONS

3x3 SON (DRB)

NAME

PIN NO.

DESCRIPTION

IN

8

Input supply

GND

4, Pad

Ground

Driving the enable pin (EN) high turns on the regulator. Driving this pin low puts the regulator into

EN

5

shutdown mode. Refer to the Shutdown section under Applications Information for more details. EN

can be connected to IN if not used.

Fixed voltage versions only

—connecting an external capacitor to this pin bypasses noise generated by

NR

3

the internal bandgap, reducing output noise to very low levels.

Adjustable voltage version only

—this is the input to the control loop error amplifier, and is used to set

FB

3

the output voltage of the device.

OUT

1

Output of the Regulator. There are no output capacitor requirements for stability.

Copyright

© 2011, Texas Instruments Incorporated

5